Non-parametric Methods
Key idea: Use non-parametric learner.
Siamese networks
利用孪生网络预测两个图片是否是同一个类别：
Matching Networks
原本元训练是二分类问题，元测试是多分类问题，可以通过在高维学习到空间进行最近邻判断的方法将两者结合起来。 From Matching networks for one-shot learning.
Prototypical networks
From Prototypical networks for few-shot learning.
More Complex Relations
Properties of Meta-Learning Algorithms
Computation Graph Perspective
Algorithmic Properties Perspective
三种方法的具体区别：
Note: Cover Picture